21401217

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{491}}^1$

素因数の和:693

約数の個数: 24

約数和(自身を含む): 32235840

約数和(自身を除く): 10834623

約数列:

[1, 3, 9, 29, 87, 167, 261, 491, 501, 1473, 1503, 4419, 4843, 14239, 14529, 42717, 43587, 81997, 128151, 245991, 737973, 2377913, 7133739, 21401217]

約数ペア:

[(1, 21401217), (3, 7133739), (9, 2377913), (29, 737973), (87, 245991), (167, 128151), (261, 81997), (491, 43587), (501, 42717), (1473, 14529), (1503, 14239), (4419, 4843)]